I was kindly given a guest pass to the Cannon Street branch of Nuffield Health.
The good stuff: the place is huge which means it never feels crowded, it is clean and tidy and the changing facilities are massive (which means I got lost several times!). Two swimming pools - one divided by lanes, I chose the "leisurely slow" one and I could see other swimmers were not impressed with my slow pace but that's why I chose that lane! I just wanted to chill out between client appointments and I refused to be pressurised into swimming fast. I should have chosen the free pool without lanes, it had a more relaxed atmosphere.
From the swimming pool you can see the yoga studio, the class looked good and it was at lunchtime. Perfect for stressed out City executives.
The hydrotherapy pool is phenomenal: you do get a good pummelling with the water jets and it feels like a deep tissue massage! Don't plan to do anything strenuous after that (e.g. work like I had to do!) as you'll feel completely spent!
Please note that if you join you get a full health assessment and if you achieve your fitness goals after 3 months you get 1 month's membership free. That's an excellent idea.
There's physiotherapists and personal trainers on site plus the O Spa for more pampering treatments.
Steam room was lovely and so were the showers.
The not so good: at lunchtime it was very busy at reception, the phone was ringing off the hook and when I got there only one receptionist was available and you can see it was overwhelming. Another staff member joined her shortly after while I was waiting but you really needed more hands on deck. I was told there's usually 4 receptionists at busy times. I was not shown around so I kept on getting lost. And I forgot to get a towel from reception (I assumed I could get one in the changing rooms) so I stumbled upon the O Spa within the complex and asked for a towel there. I bet they were not impressed!
Overall this is a fantastic venue, pricy but you do get a lot of added value (personal training, physio, health assessment). Maybe one day when I'm rich and famous I will be able to afford the membership!